ThorCon is proposing to build two 500 MW molten salt nuclear reactors in Indonesia to supplement coal power. The ThorCon design is based on a molten salt reactor developed at Oak Ridge National Lab that ran from 1965-1969. It uses thorium and uranium fuel dissolved in fluoride salts, which allows for low pressure operation and intrinsic safety. ThorCon claims its capital and fuel costs will be lower than coal plants due to efficiencies from the molten salt design and shipyard construction. A prototype ThorCon reactor would be built in a hull and towed to Indonesia to be powered up, with passive safety systems to ensure safe operation even during a Fukushima-like event.